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Algodonite - Occurrence, Properties, and Distribution

Algodonite is a gray white metallic, copper arsenide mineral crystallizing in a hexogonal pattern. The mineral was first discovered from the Algodones silver mine in Coquimbo, Chile in 1857. It has a Mohs hardness of 4 and a specific gravity of 8.38 - 8.72.

4 Jun 2014

Ferrarisite - Occurrence, Properties, and Distribution

Ferrarisite is a triclinic-pinacoidal mineral consisting of oxygen, hydrogen, calcium and arsenic. It was named after Professor Giovanni Ferraris, who worked on crystal structures of various arsenate minerals.

4 Jun 2014

Eitelite - Occurrence, Properties, and Distribution

Eitelite is a trigonal-rhombohedral mineral consisting of sodium, oxygen, magnesium and carbon. It was named after Wilhelm Eitel, Director, Institute of Silicate Research, University of Toledo, Ohio, who first produced it.

4 Jun 2014

Gaspeite - Occurrence, Properties, and Distribution

Gaspeite is a member of the calcite group of minerals. It was named after its site of discovery, Gaspe Peninsula in Quebec. It is found in Western Australia also.

3 Jun 2014

Helvine - Occurrence, Properties, and Distribution

Helvine is a yellowish mineral containing iron, manganese, glucina, silica and small amounts of sulfur. It was named after the Latin word ‘helvus’ which means yellow.

3 Jun 2014

Zussmanite - Occurrence, Properties, and Distribution

Zussmanite is a hydrated iron-rich silicate mineral occurring as pale green crystals with perfect cleavage. It was first discovered by Stuart Olof Agrell in the Laytonville quarry, Mendocino County, California in 1960.

3 Jun 2014

Wardite - Occurrence, Properties, and Distribution

Wardite is a hydrous sodium aluminum phosphate hydroxide mineral and crystallizes in the tetragonal trapezohedral class. It was named after Henry Augustus Ward, an American collector and dealer in natural history objects, Rochester, New York, USA.

3 Jun 2014

Surinamite - Occurrence, Properties, and Distribution

Surinamite is a monoclinic blue green crystal that was first discovered in the Bakhuis Mountains. It is a member of sapphirine supergroup of minerals. It was named after Surinam where the mineral was first discovered.

3 Jun 2014

Brianite - Occurrence, Properties, and Distribution

Brianite is a phosphate mineral first identified in an iron meteorite. The mineral was named in honor of Brian Harold Mason, a New Zealandic-American meteoriticist, mineralogist and geochemist.

3 Jun 2014

Colemanite - Occurrence, Properties, and Distribution

Colemanite is a borate mineral that forms by alteration of ulexite and borax. It was first discovered in 1884 from Furnace Creek in Death Valley. The mineral was named after William Tell Coleman, owner of Harmony Borax mine where the mineral was first found.

3 Jun 2014